Alternating Current and Dynamically Induced Voltage
INTRODUCTION
Tachogenerator is an electromechanical device which generates an electrical output directly proportional to the speed of the rotating systems. Tachogenerators are basically transducers. This transducer converts the speed of rotation directly into electrical signal. The angular speed is converted into a directly dependent voltage signals. The voltage thus generated is fed to a speedometer for speed measurement and /or used as a feedback signal for controlling the speed of a rotating shaft.
An electromechanical generator is a device capable of producing electrical power from mechanical energy, usually the turning of a shaft. When not connected to a load resistance, generators will generate voltage roughly proportional to shaft speed. With precise construction and design, generators can be built to produce very precise voltages for certain ranges of shaft speeds, thus making them well-suited as measurement devices for shaft speed in mechanical equipment. A generator specially designed and constructed for this use is called a tachometer or tachogenerator. Often, the word "tach" (pronounced "tack") is used rather than the whole word. By measuring the voltage produced by a tachogenerator, you can easily determine the rotational speed of whatever it's mechanically attached to. One of the more common voltage signal ranges used with tachogenerators is 0 to 10 volts
Hence tachogeneratros are electrical type of tachometer. Electrical voltages may be statically induced or dynamically induced. Depending on the nature of the voltage induced there are two types of tachogenerators:
1. DC tachogenerator
2. AC tachogenerator
PRINCIPLE
It operates on the principle of Faraday’s Laws of Electromagnetic induction . It states that whenever there is a relative motion between the magnetic field and a conductor , then the voltage is generated in that conductor.
Characteristic requirements of tachogenerator:
Accuracy: The input to the tachogenerator is
Tachogenerator is an electromechanical device which generates an electrical output directly proportional to the speed of the rotating systems. Tachogenerators are basically transducers. This transducer converts the speed of rotation directly into electrical signal. The angular speed is converted into a directly dependent voltage signals. The voltage thus generated is fed to a speedometer for speed measurement and /or used as a feedback signal for controlling the speed of a rotating shaft.
An electromechanical generator is a device capable of producing electrical power from mechanical energy, usually the turning of a shaft. When not connected to a load resistance, generators will generate voltage roughly proportional to shaft speed. With precise construction and design, generators can be built to produce very precise voltages for certain ranges of shaft speeds, thus making them well-suited as measurement devices for shaft speed in mechanical equipment. A generator specially designed and constructed for this use is called a tachometer or tachogenerator. Often, the word "tach" (pronounced "tack") is used rather than the whole word. By measuring the voltage produced by a tachogenerator, you can easily determine the rotational speed of whatever it's mechanically attached to. One of the more common voltage signal ranges used with tachogenerators is 0 to 10 volts
Hence tachogeneratros are electrical type of tachometer. Electrical voltages may be statically induced or dynamically induced. Depending on the nature of the voltage induced there are two types of tachogenerators:
1. DC tachogenerator
2. AC tachogenerator
PRINCIPLE
It operates on the principle of Faraday’s Laws of Electromagnetic induction . It states that whenever there is a relative motion between the magnetic field and a conductor , then the voltage is generated in that conductor.
Characteristic requirements of tachogenerator:
Accuracy: The input to the tachogenerator is